“NCT MashUp,” National Comedy Theatre: The always-hopping comedy institution offers its wide-ranging “MashUp” improv event Thursday night (Dec. 20), with a variety of performers in a “collision of talent.” The show is at 7:30 p.m. Other shows, 7:30 p.m. and 9:45 p.m. Fridays-Saturdays and 7:30 p.m. Sundays; midnight show at 11:45 p.m. the last Saturday of each month. 3717 India St., Midtown. $8-$15. (619) 295-4999 or nationalcomedy.com

American Comedy Co.: “SNL” cast member Jay Pharoah performs at the downtown club Dec. 20-22. ACC also hosts a “Miracle on Sixth Avenue” show Dec. 23, benefiting the Salvation Army. 818-B Sixth Ave., Gaslamp Quarter. $24-$27 for Pharoah; $10 or an unwrapped toy for admission to “Miracle” benefit. (619) 795-3858 or americancomedyco.com

Mystery Cafe Dinner Theater: The company rolls out “Crime Pays,” a “radio game show” that’s brought to you straight from the Flamingo Hotel in Las Vegas (or so the setup goes). A four-course dinner is included. 8 p.m. Fridays-Saturdays. $59.50 ($49.50 Internet special Dec. 21-22). (619) 460-2200 or mysterycafe.net